As a default, Sophos / Astaro UTM’s SMTP Proxy listens on all external IP addresses. Quite annoying if you have an internal mail server that you want to let your external users use for sending (authenticated) emails, since UTM will intercept all SMTP traffic.

Here’s how I solved that (only works if you have at least 2 public IP addresses).

– NAT one external public IP address to your internal mail server (so forward at least ports 25, 465, 587; use the IP address that you use for (example) mail.yourdomain.com. In this example I use 23.37.149.232 (WAN – FW2)

– enable SMTP proxy on your UTM (your UTM will now listen on all your external public IP addresses)

Recently, I extended my RAID 5 array with 2 extra disks from 3x 146GB to 5x 146GB, creating thus a logical RAID 5 volume of (5x 146 – 146=) 584GB. Since I didn’t want to move my VM’s to another box and reformat the datastore, I gathered all the info on the internet and made this manual.

Notes:

* All the instructions are executed on a whitebox (i7 3770) and a SmartArray P400 controller.
* I already modified the HP ESXi tools to be able to run on non-HP hardware.
* It is highly recommended that you backup all your VM’s before executing a single command.
Everything worked fine for me but one error in a command could lead to a complete data loss of everything!
* To see the rebuilding status, HP has a tool called hpacucli which allows you to control the array and see the status of it out of the ESXi console.
* I’m NOT responsible for YOUR mistakes. See note 3.